A block hangs off the edge of a plane that is inclined at an angle of e=30.0°, as shown in the figure below. The block is attached to a massless string that runs across a uniform pulley with a mass of 10.0 kg and a radius of 8.00 cm. The other end of the string is connected to a spring that runs parallel to the plane and has a spring constant of 200 N/m. Initially, the block is at rest and the spring is at equilibrium. Once the block has fallen 0.150 m, it is traveling with a speed of 0.500 m/s. What is the mass of the block? www O 2.66 kg O 121 kg 04.71 kg O 214 kg 0 167kg

A block hangs off the edge of a plane that is inclined at an angle of e=30.0°, as shown in the figure below. The block is attached to a massless string that runs across a uniform pulley with a mass of 10.0 kg and a radius of 8.00 cm. The other end of the string is connected to a spring that runs parallel to the plane and has a spring constant of 200 N/m. Initially, the block is at rest and the spring is at equilibrium. Once the block has fallen 0.150 m, it is traveling with a speed of 0.500 m/s. What is the mass of the block? www O 2.66 kg O 121 kg 04.71 kg O 214 kg 0 167kg